Whistle



FIG. 1 is an enlarged perspective view of a whistle showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a right side elevational view thereof; and

FIG. 7 is a bottom plan view thereof, with the loop in an alternate position as in FIG. 1. 

The ornamental design for a whistle, as shown. 